Surf board



June 24, 1930'.

I R. am. YPOLLARD 1,767,811

SURF BOARD Filed Nov. 9, 1929 IN VEN TOR.

Patented June 24, 1930 i I UNITED STATES PATENT" OFFICE RAYMOND MCMILLEN POLLARD, OF LOS ANGELES, CALIFORNIA SURF BOARD Application filedINovember 9, 1929. Serial No. 405,868.-

This invention relates to improvements in Figure 2 is a side elevation thereof. with aquatic apparatus and more particularly to the propulsion blade closed, surf boards and the like. Figure 3 is a view similar to Figure 2 but One of the objects of this invention is to showing the blade in open, operative posiprovide a simple, eflicient and inexpensive tion,

surfboard equipped with propulsion means Figure 4 is a rear end elevation of my effective in all cases where there is an ininvention,

coining tide or iii-rolling waves. Figure 5 is a cross section taken thru A further object thereof is to provide in a re nforcing rib of the blade, and combination with a surf board a blade de- Flgure 6 1s a perspective view, partly 60 signed when in collapsed or closed position broken away, showing the propulsion blade on this board to float with the board in in open operative position, and which case the board is propelled by the Figure 7 is a fragmental sectional detail hands or feet of the occupant, but whenever Vi w f a surf board showing my blade in the waves begin to move in a direction counfully open position perpendicularly arranged 5 ter to the intended movement of the board r atively o aid b IC a the occupant can instantly open the blade In he drawings, which are merely illusand make it assume a perpendicular position trative of my invention, 10 designates an beneath the surf board Where the blade can aquatic device such as a surf board that is 2 be subject to the action of the waves and be made rectangular in shape The p p l n 0 automatically propelled towards the shore or lade for Said surf board is designated 11 beach without the intervention of the occu being preferably of rectangular formation pant. except that the blade is curved at its outer A still further object thereof is to provide d as at 12- A pair 0f hinged p ates 13 are a hinged mounting for the propulsion blad secured by fasteners 12 to the inner face 7 so constructed and arranged upon the surf 9 the blade 11 and a fiXefl hinged plate 14: board that the hinges or hinged plates may 13 U Q y fasteners 15 i countersunk I be countersunk, at the same time, into a rerelatlon lnto the board cess formed in the board for this purpose The board 10 13 also cut y at 18 to assure that the blade when closed will r receptiqnpf the hinge-d t 13 Overlap the under side of the board wnen the latter IS in a fully closed position.

Another object of this invention is to It will be seen that hinged Collars 15,

l e lso countersunk directl to the surf hinge the propulsion blade 1n a manner to In a y 35 cause its inner end to contact the surf board board the pmtle 16 pass'mg through sald for the purpose of projecting the blade in a Collars and through the board 1 1 1 L The line of hinges or hinge collars 15 is pelpenc mu posmon lelallvely to substantially the medial line of the board 10.

board to Prevent the blade from g g The correct position of this surf board at 011 are greater than g the time it is to be placed in the water is 40 l/V th the above and other objects in V ew shown in Figure 2 where the surf blade 11 90 my invention consists in the combination, overlies the under side of the surf boardin arrangement and details of construction discollapsed relationship. In this position of closed 1n the drawings and specification and the parts the occupant may lie down upon then more particularly pointed out in the the board and the board and blade will both 15 appended claims. float upon the surface of the water and the In the drawings, wherein similar referoccupant may use his feet or hands to pro-, ence characters designate similar parts pel the board forwardly or rearwardly. throughout the respective views, The usual cruising range of this surf board Figure 1 1s a top plan view of my inis the area of the beach up to high'wave 50 ventlon, line and when this point is reached and the wave starts to come in, the occupant can take hold of the blade 11 and open it as far as it swings downwardly into the water and when the inner edge of the blade 11 engages the under side of the board, the blade can move no further and occupies the perpendicular position shown in Figure 3. As the waves now roll in, they will engage the bladell and press it toward the front of the board, but as the blades can move no further, the board itself is propelled by the waves without any physical exertion by the occupant of the board, so the waves will push the surf board back to the border of the beach at which time the blade can be closed again to allow the surf board to float under direction of'the occupant.

. There cannot be any severe strain on the blade at any time nor on its hinges. The bladesmay be reinforced by having the cross rib '17 secured transversely thereof. I do not mean to limit myself to the exact de tails of construction disclosed herein but intend to cover all variation falling within the scope of the present claims.

lVhat I desire to claim and secure by Letters Patent is:

1. A device as described consisting of a flat board, a hinged plate carried by said board between its ends, means limiting the swinging movement of said hinged plate to a perpendicular position relatively to said board, said board having a pocket to receive said hinges when the plate is in close position and in overlying relationship upon the board.

2. A device of the kind described consisting of a surf board, a propulsion plate, a plurality of hinges countersunk transversely in said board in fixed relation, movable hinges normally countersunk in said board, and'attached' to the inner end of said propulsion plate and designed to permit the plate gaged by waves for the self-propulsion of the board, there being a transversely extending reinforcing rib mounted upon one side of the blade.

In witness whereof he has hereunder set his hand this nineteenth day of February, 1930.

RAYMOND MCMILLEN POLLARD.

to open and to cause the inner end of the plate to abut the fixed hin es to thereby cause the propulsion plate to assume a perpendicular position. I

A surf board having apropulsion blade overlying the under side thereof so that as the board floats the blade is in close position, means hingedly connecting the inner end of said blade to said board whereby the blade can bemanually moved on its hinges until its inner edge overlies the board and the blade assumes a perpendicular position and may be impinged by the action of the in-fiow of waves.

4. A device as described consisting of a flat board, a pair of oppositely arranged hinge plates, said board being cut away to receive in countersunk relation therein the opposite hinge plates including the hinge collars, and a propulsion blade secured to the movable hinge plate in such a manner that when the movable hinge plate is counter- 

